Seamless bonding method for waterproof fabrics

Abstract

The present invention relates to seamless bonding of waterproof fabrics and, more specifically, to a seamless bonding method for waterproof fabrics, which, when joining two waterproof fabrics each coated on one side, enables double bonding of the two waterproof fabrics without conventional sewing or seam sealing, thereby facilitating manufacturing of clothes and the like through waterproof fabric bonding. Also, because waterproof tape does not need to be used, the thickness of the seam can be reduced, thereby allowing for a more aesthetically pleasing appearance. Also, with respect to the joined location, no gap is formed in the joint portion even on the outside, and thus, infiltration of moisture can be completely blocked, thereby improving the waterproof performance and durability of waterproof clothing.

Description

Seamless joining method of waterproof fabric

[0001] The present invention relates to a method for joining waterproof fabrics without sewing, and more specifically, to a method for joining waterproof fabrics without sewing, in order to obtain a sturdy joint connection in a seamless state without sewing or seam sealing operations, as well as an attractive finish, when joining a single-sided coated waterproof fabric.

[0002] With the recent rise in leisure and hobby activities, a variety of functional clothing and garments are becoming more widely used. These various types of clothing typically require basic waterproofing. Waterproof clothing is typically produced using fabrics with a waterproof coating on one side.

[0003] Accordingly, clothing that requires waterproofing, such as mountaineering clothes, ski clothes, raincoats, jumpers, and hats, is made using the above waterproof fabric, so that it faithfully performs the original function of clothing while also being waterproof, allowing for protection against rainy weather.

[0004] Meanwhile, referring to Fig. 1, the production of such clothing, etc. is not done with a single waterproof fabric, but rather by connecting multiple waterproof fabrics to produce a single clothing, etc. In a conventional method, first, multiple waterproof fabrics (1)(1') are connected by sewing (2).

[0005] And the connected location is where a gap is created through the penetration of the thread of the sewing line, and the wing part (3) is folded at the sewing location and a waterproof tape (4) is used for seam sealing to finish the process.

[0006] However, the above method of welding waterproof tape on a sewing line requires sewing and welding waterproof tape, which makes the joining work very inconvenient and increases the work cost.

[0007] In addition, finishing the sewing line by welding waterproof tape had problems such as folding of the wing part during sewing and thickening of the joint due to waterproof tape bonding, which made the clothing look rough.

[0008] In addition, the above method of welding waterproof tape had the problem of the seams of the clothing being exposed from the outside, causing moisture to seep in through the gaps during long-term use, which reduced the adhesive strength of the waterproof tape, and also had the problem of its appearance being poor.

[0009] [Patent Document]

[0010] (Patent Document 1) Republic of Korea Patent No. 10-2028179.

[0011] (Patent Document 2) Republic of Korea Patent No. 10-1485267.

[0012] The present invention was created to solve the above-mentioned problems, and the purpose of the present invention is to provide a seamless joining method for waterproof fabrics, which makes it possible to join waterproof fabrics on both sides with a single-sided coating without the need for conventional sewing or seam sealing work through double joining of the waterproof fabrics on both sides, thereby making it very convenient to manufacture clothing and the like using the waterproof fabrics.

[0013] In addition, the purpose of the present invention is to provide a seamless joining method of waterproof fabric to enable the creation of an attractive appearance, such as by making the thickness of the joint thinner without attaching a waterproof tape.

[0014] In addition, the purpose of the present invention is to provide a seamless joining method of waterproof fabrics to improve the waterproof performance and durability of waterproof clothing by completely blocking the inflow of moisture without creating a gap at the joint from the outside for the jointed location.

[0015] As a specific means to achieve the above purpose, waterproof fabrics on both sides having a water-repellent layer formed on one surface of the inner skin and a coating surface forming the outer skin are joined together.

[0016] A first bonding process in which the coated surfaces of the waterproof fabrics on both sides to be bonded are overlapped so that they are in contact, and one side to be bonded is welded to a certain width to form a first bonding portion and bond and connect the waterproof fabrics on both sides;

[0017] A waterproof fabric folding process in which the upper waterproof fabric is folded so that the coating surface of the upper waterproof fabric is positioned on the upper surface and the inner surface of the upper waterproof fabric is aligned with each other at the first joint position; and

[0018] The second bonding process is performed by welding the upper waterproof fabric while the hot melt is embedded between the inner skins of the upper waterproof fabric and forming a second joint and bonding the upper waterproof fabric.

[0019] At this time, in the first bonding process,

[0020] The first joint where the coated surfaces of the waterproof fabrics on both sides meet is joined by adding hot melt.

[0021] In addition, in the first bonding process and the second bonding process,

[0022] The first joint and the second joint are joined by welding using ultrasonic welding.

[0023] At this time, the ultrasonic welding is

[0024] Ultrasonic welding using a rotating method using a disk-shaped rotating ultrasonic horn, or

[0025] This can be achieved by welding using either press pressure or ultrasonic welding using a block-shaped pressurized ultrasonic horn.

[0026] As described above, the seamless joining method of the waterproof fabric of the present invention enables the joining of a single-sided coated waterproof fabric by joining only without sewing or seam sealing operations, and is very convenient when manufacturing clothing using a single-sided coated waterproof fabric, and in particular, it can achieve the effect of significantly reducing the cost of manufacturing clothing.

[0027] In addition, it is possible to manufacture the product by simply joining the waterproof fabric without folding the sewing part or attaching the waterproof tape, and thus, it is possible to obtain the effect of creating a beautiful appearance of the clothing by reducing the thickness of the joint.

[0028] In addition, since there are no gaps on the outside of the joint, moisture penetration from the outside is completely blocked, which improves the waterproof performance and durability of the clothing.

[0029] Figure 1 is a cross-sectional view showing a conventional method of bonding waterproof fabric.

[0030] Figure 2 is a diagram showing the entire process of a seamless bonding method for a waterproof fabric of the present invention.

[0031] Figure 3 is a simplified diagram of the first bonding process of the seamless bonding method of the waterproof fabric of the present invention.

[0032] Figure 4 is a simplified diagram of a waterproof fabric folding process of a seamless joining method of a waterproof fabric of the present invention.

[0033] Figure 5 is a simplified diagram of the second bonding process of the seamless bonding method of the waterproof fabric of the present invention.

[0034] Figure 6 is an example of ultrasonic welding of a seamless bonding method for a waterproof fabric of the present invention.

[0035] Figure 7 is a simplified diagram showing a waterproof fabric joined by a seamless joining method of the waterproof fabric of the present invention.

[0036] [Explanation of symbols]

[0037] 10,10': Waterproof fabric 11: Lining

[0038] 12: Coated surface

[0039] 20: First joint 30: Second joint

[0040] 50: Rotary ultrasonic horn 50: Pressurized ultrasonic horn

[0041] S100: First bonding process S200: Waterproof fabric folding process

[0042] S300: Second bonding process

[0043] Terms or words used in this specification and claims should not be interpreted as limited to their usual or dictionary meanings, but should be interpreted as meanings and concepts that conform to the technical idea of ​​the present invention, based on the principle that the inventor can appropriately define the concept of the term to explain his or her own invention in the best way.

[0044] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0045]

[0046] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0047] Figure 2 is a diagram showing the entire process of a seamless bonding method for a waterproof fabric of the present invention.

[0048] As shown in the drawing of Fig. 2, the seamless joining method of the waterproof fabric of the present invention is to join waterproof fabrics (10) (10') on both sides, in which a water-repellent layer and a coating surface (12) forming an outer layer are formed on one surface of the inner skin (11), and is performed by performing a first joining process (S100), a waterproof fabric folding process (S200), and a second joining process (S300).

[0049] First, the first bonding process (S100) is

[0050] In performing the seamless joining method of the waterproof fabric of the present invention, the ends of the waterproof fabrics (10)(10') on both sides are connected by seam.

[0051] To do this, first, referring to Fig. 3, the waterproof fabrics (10)(10') on both sides to be joined are overlapped vertically with their respective coating surfaces (12) in contact.

[0052] And, welding is performed on one end of the overlapping waterproof fabric (10)(10') to be connected, and welding is performed linearly so as to have a constant width, so that the coated surfaces (12) of the waterproof fabrics (10)(10') on both sides are joined, thereby forming a first joint (20) at the joining position, and connecting the waterproof fabrics (10)(10') on both sides becomes possible.

[0053] At this time, when performing bonding to form the first bonding portion (20) in the present invention, it is not limited and is possible through various embodiments.

[0054] To explain in detail, the coating surface (12) of the waterproof fabric (10) (10') is formed by coating with a synthetic resin having various water-repellent properties such as PU and PVC, and bonding can be made possible simply by melting the coating surface (12) depending on the temperature at which it is welded.

[0055] In addition, it may be possible to weld together with melting of the hot melt (H) by further embedding a separate hot melt (H) between the contacting coating surfaces (12) of the waterproof fabrics (10) (10') on both sides.

[0056] After that, the waterproof fabric folding process (S200)

[0057] In performing the seamless joining method of the waterproof fabric of the present invention, the waterproof fabric (10) located at the top is folded so that the waterproof fabrics (10)(10') on both sides are spread out.

[0058] To this end, referring to Fig. 4, the waterproof fabric (10) located at the top is folded, and the waterproof fabric (10) located at the top is folded to one side with the first joint (20) where the waterproof fabrics (10) (10') on both sides are joined as the center, so that the coating surface (12) of the upper waterproof fabric (10) is exposed to the upper surface.

[0059] Accordingly, at the folded position of the upper waterproof fabric (10), i.e., at the position of the first joint (20), the inner skins (11) are brought into contact with each other.

[0060] Afterwards, the second bonding process (S300)

[0061] In performing the seamless joining method of the waterproof fabric of the present invention, the upper waterproof fabric (10) folded as described above is joined.

[0062] To this end, referring to Fig. 5, by placing a hot melt (H) between the inner coverings (11) of waterproof fabrics (10) (10') that are opposed to each other at the position of the first joint (20), the inner coverings (11) are joined by melting and welding the hot melt (H) at the position of the first joint (20), thereby forming a second joint (30) at the joint position, and at the same time, joining the joint of the upper waterproof fabric (10) becomes possible.

[0063] At this time, in the present invention, the hot melt (H) is embedded between the inner lining (11) of the waterproof fabric (10) located at the upper portion. In general, water-repellent clothing using waterproof fabric has an inner lining (11) that is not coated for the purpose of skin feel or air permeability. Therefore, it is preferable to apply the hot melt (H) for smooth bonding of the fabric.

[0064] Meanwhile, in the present invention, the first bonding process (S100) for bonding the coating surfaces (12) of the waterproof fabrics (10) (10') on both sides as described above and the first bonding part (20) and the second bonding part (30) of the 22 bonding process (S300) for bonding the inner skin (11) of the upper waterproof fabric (10) will be made possible through melt bonding using ultrasonic welding.

[0065] This means that in the case of the waterproof fabric (10)(10') forming the coating surface (12), when bonding using hot air as in the case of conventional waterproof tape bonding, the coating surface may be damaged by heat at a location other than the bonding portion of the waterproof fabric (10)(10'). Therefore, in the present invention, bonding is performed using ultrasonic friction at an accurate bonding location through ultrasonic welding.

[0066] Meanwhile, the ultrasonic welding method applied as described above in the present invention is not limited and various ultrasonic welding methods are possible.

[0067] This is done by first using a rotary ultrasonic horn (50) that rotates around a certain axis (not shown in the drawing) in the shape of a disk with reference to (a) of Fig. 6, and in the process of introducing and discharging the waterproof fabric (10)(10') between the rotary ultrasonic horn (50) and the support roll (51), ultrasonic frictional heat is generated and welding is possible.

[0068] In addition, referring to (b) of Fig. 6, a pressurized ultrasonic horn (60) is used to form a block shape through an up-and-down press operation, and ultrasonic frictional heat is generated and welding is possible in the process of introducing and discharging the waterproof fabric (10)(10') between the pressurized ultrasonic horn (60) and the support roll (61).

[0069] Accordingly, through a series of processes as described above, with reference to Fig. 7, seamless joining of the waterproof fabrics (10)(10') on both sides is possible without separate sewing work or seam sealing work using waterproof tape when connecting the waterproof fabrics (10)(10') on both sides.

[0070]

[0071] Hereinafter, the operation of the seamless bonding method of the waterproof fabric of the present invention having the above-described configuration will be described in detail.

[0072] Referring to FIGS. 2 to 7, the seamless joining method of the waterproof fabric of the present invention enables seamless joining of the waterproof fabrics (10) (10') on both sides by joining the coating surfaces (12) of the waterproof fabrics (10) (10') on both sides and joining the inner skin (11) of the waterproof fabric (10) located on the upper side.

[0073] Accordingly, the seamless joining method of the waterproof fabric of the present invention as described above enables easy joining of the waterproof fabric (10)(10') without sewing and seam sealing work during the joining process, and thus the joining work of the waterproof fabric (10)(10') on both sides is greatly simplified, and the cost of production can be reduced due to the reduction in materials required for the work and the simplification of the work.

[0074] In addition, even if an external force such as pulling is applied to the double-bonded waterproof fabric (10)(10') bonded through a strong bond, the bonded portion is prevented from being damaged.

[0075] In addition, the thickness of the wing portion and the thickness of the waterproof tape that occur during sewing are omitted, and the thickness of the joint portion becomes considerably thinner, which further enhances the beauty of the joint portion.

[0076] In addition, no joint gaps are created on the outside of the waterproof fabric (10)(10') at the jointed location, and thus the waterproof performance and durability are further improved, such as by completely blocking the penetration of moisture.

[0077] As described above, the seamless joining method of the waterproof fabric of the present invention enables convenient and sturdy seamless joining of the waterproof fabrics on both sides when connecting the waterproof fabrics with a water-repellent coating on one side through a series of processes.

[0078]

[0079] The seamless joining method of the waterproof fabric of the present invention enables the joining of a single-sided coated waterproof fabric by joining only without sewing or seam sealing, and is very convenient when manufacturing clothing using single-sided coated waterproof fabric, and in particular, the cost of manufacturing clothing is significantly reduced, and the appearance of clothing can be presented more beautifully due to the reduction in the thickness of the joint, and since no gaps are formed from the outside of the joint, moisture penetration from the outside is completely blocked, thereby improving the waterproof performance and durability of clothing.

Claims

1. Waterproof fabrics (10) (10') on both sides, each having a water-repellent layer formed on one surface of the inner skin (11) and a coating surface (12) forming the outer skin, are joined together. A first bonding process (S100) in which the coated surfaces (12) of the waterproof fabrics (10) (10') on both sides to be bonded are overlapped so that they are in contact, and one side to be bonded is welded to a certain width to form a first bonding portion (20) and the waterproof fabrics (10) (10') on both sides are bonded and connected; A waterproof fabric folding process (S200) in which the upper waterproof fabric (10) is folded so that the coating surface (12) of the upper waterproof fabric (10) is positioned on the upper surface and the inner covering (11) of the upper waterproof fabric (10) is aligned with each other at the first joint (20) position, and the upper waterproof fabric (10) is folded by bending it to one side; and A seamless joining method for a waterproof fabric, characterized in that a second joining process (S300) is performed to form a second joint (30) and join the upper waterproof fabric (10) by welding the upper waterproof fabric (10) while the inner skin (11) of the upper waterproof fabric (10) is placed between the upper waterproof fabric (10) to form a second joint (30).

2. In paragraph 1, In the above first bonding process (S100), A seamless joining method for waterproof fabrics, characterized in that the first joint (20) where the coated surfaces (12) of the above-mentioned waterproof fabrics (10) (10') are in contact is joined while hot melt (H) is further embedded therein.

3. In paragraph 1, In the above first bonding process (S100) and second bonding process (S300), A seamless joining method of a waterproof fabric, characterized in that the joining of the first joint (20) and the second joint (30) is performed by welding through ultrasonic welding.

4. In paragraph 3, The above ultrasonic welding is, Ultrasonic welding using a rotation method using a disk-shaped rotary ultrasonic horn (50), or A seamless bonding method for waterproof fabrics, characterized by welding using either press pressure or ultrasonic welding using a block-shaped pressurized ultrasonic horn (60).

Images